 /*******************************************************************************
  * Copyright (c) 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.editors.text;

 import java.util.ArrayList ;
 import java.util.List ;

 import org.eclipse.core.runtime.Assert;

 import org.eclipse.core.resources.IResource;

 import org.eclipse.jface.action.Action;

 import org.eclipse.ui.actions.RefreshAction;
 import org.eclipse.ui.texteditor.ITextEditor;
 import org.eclipse.ui.texteditor.IUpdate;


 /**
  * Refresh text editor action.
  * <p>
  * XXX: This class illegally sublcasses {@link RefreshAction},
  * see https://bugs.eclipse.org/bugs/show_bug.cgi?id=182105 for details.
  * </p>
  *
  * @since 3.3
  */
 public class RefreshEditorAction extends Action implements IUpdate {
     
     private ITextEditor fTextEditor;

     public RefreshEditorAction(ITextEditor textEditor) {
         Assert.isLegal(textEditor != null);
         fTextEditor= textEditor;
         update();
     }
     
     /*
      * @see org.eclipse.jface.action.Action#run()
      */
     public void run() {
         final IResource resource= fTextEditor == null ? null : (IResource)fTextEditor.getEditorInput().getAdapter(IResource.class);
         if (resource == null)
             return;

         RefreshAction impl= new RefreshAction(fTextEditor.getSite().getShell()) {
             protected List getSelectedResources() {
                 List result= new ArrayList (1);
                 result.add(resource);
                 return result;
             }
         };
         impl.run();
     }

     /*
      * @see org.eclipse.ui.texteditor.IUpdate#update()
      */
     public void update() {
         final IResource resource= fTextEditor == null ? null : (IResource)fTextEditor.getEditorInput().getAdapter(IResource.class);
         setEnabled(resource != null);
     }

 }

